'occupiers' ? You mean the residents of the boroughs. I think they should be able to charter their own course. If that's no McDs or Walmarts or Marijuana dispensaries or liquor stores-- 'tis their right to charter their own. That's far different than a nationalized system; as its far easier to travel out of the city than abroad of country. Nonetheless, you'll find a flourishing black market in the tri-border area of Brazil. Free markets find a way.